Answer:
A. The price of a gallon of gasoline rises by $0.25 after a hurricane. - 3. Demand decreases.
B. After Halloween, grocery stores sell Halloween candy at 50% the original price. - 1. Demand increases.
C. A new law lowers the cost of prescription drugs. - 2. Demand stays the same.
D. In the spring time, animal shelters take in hundreds of kittens, as a result, they waive fees for cat adoption. - 1. Demand increases.
E. The price of beef rises after a new disease is discovered in cows. - 3. Demand decreases.
F. Someone buys all the Swiss rolls in the cafeteria, causing the school to raise prices. - 3. Demand decreases.
G. New cars become more expensive due to a microchip shortage. - 3. Demand decreases.
H. A boutique has a sale for 25% off all purses. - 1. Demand increases.